I know it sounds stupid but I work with some dogs that do feel embarrased when they have their haircuts, we have owners come in and say that they hide for a while because they aren't used to their hair being so short. If they did something you didn't ask for I would definatly go back and ask for an explaination.. They are working on your dog and its up to you what happens in terms on styles. IF there was a problem they should of told you before you left the dog in their care. For example if we get in a matted dog we check them over whilst the owner is there dropping them off so they can see its impossible to comb through.. I doubt that was the case in this, you sound like you keep up the grooming well with your pup.